KR870010202A - Melting furnaces and metal melting methods - Google Patents

Melting furnaces and metal melting methods Download PDF

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Publication number
KR870010202A
KR870010202A KR870003274A KR870003274A KR870010202A KR 870010202 A KR870010202 A KR 870010202A KR 870003274 A KR870003274 A KR 870003274A KR 870003274 A KR870003274 A KR 870003274A KR 870010202 A KR870010202 A KR 870010202A
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furnace
metal
injection means
gas injection
melting furnace
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KR870003274A
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KR920000524B1 (en
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죤 마데버 웨인
프란시스 리레이 미첼
죠세프 세라인즈 로날드
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리모씨 엔. 비숍
유니온 카바이드 코포레이션
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/12—Working chambers or casings; Supports therefor
    • F27B3/14—Arrangements of linings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/20—Arc remelting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

A melting furnace comprising: (a) a relatively wide and shallow hearth having a bottom comprising at least one layer of refractory; (b) at least one electrode within the furnace interior; (c) at least one gas injection means passing through the hearth bottom through the hearth refractory layer(s) and communicating with the hearth interior; and (d) high quality refractory surrounding at least some portion of the upper length of the gas injection means which passes through the hearth refractory layer(s). n

Description

용해로와 금속용해방법Melting furnaces and metal melting methods

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 특히 바람직한 전극과 송풍구장치를 나타내는 전기 아아크로의 로상(hearth)에 대한 평면도.1 is a plan view of a hearth of an electric arc, showing a particularly preferred electrode and a tuyere device.

제3도는 본 발명의 용해로에 유용한 송풍구 블록의 하나의 실시예.3 is one embodiment of a tuyeres block useful for the furnace of the present invention.

제4도는 본 발명의 용해로에 유용한 송풍구블록의 또 하나의 실시예.4 is another embodiment of a tuyere block useful in the furnace of the present invention.

Claims (25)

비교적 넓고 얇은 로상을 가지고, 전극(들) 부근의 금속이 로벽부근의 금속보다 앞서 용해하는, 적어도 하나의 용해 전극을 설비한 용해로에서 금속을 용해하는 방법에 있어서, 로의 바닥을 뚫고 용융금속내로 가스분사수단을 통해서 분사가스를 농축프루움으로서 분사하여 분사가스 분사지점(들) 위에서만 용융금속 표면상에 국부적인 교반을 일으키며, 이 분사지점(들)은 로상의 중앙으로부터 벗어나서 국부적인 교반(1)이 전극(들)에 어떠한 금속도 튀기지 않고, (2)용융금속에서 고체금속으로 열이 급격하게 전달됨으로써 로이 벽근처에 고체금속의 용해를 가속시킴을 특징으로 하는 용해로에서 금속을 용해하는 방법.A method of dissolving metal in a melting furnace equipped with at least one melting electrode, having a relatively wide and thin furnace, in which the metal near the electrode (s) dissolves ahead of the metal near the furnace wall, the gas passing through the bottom of the furnace and into the molten metal. The injection means inject the injection gas as concentrated fruit to cause local agitation on the molten metal surface only above the injection gas injection point (s), which injection point (s) deviate from the center of the furnace and cause local agitation (1). (2) a method of dissolving metal in a melting furnace characterized by accelerating the dissolution of solid metal near the Roy wall by the rapid transfer of heat from the molten metal to the solid metal without splashing any metal on the electrode (s). . 제1항에 있어서, 가스분사수단이 적어도 하나의 송풍구로 이루어짐을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1, wherein the gas injection means comprises at least one tuyeres. 제1항에 있어서, 불활성가스가 적어도 세개의 분사지점(들)을 통해서 멜트내로 분사됨을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein the inert gas is injected into the melt through at least three injection point (s). 제1항에 있어서, 각 분사지점이, 전극들 중 어느 전극보다도 로상의 중심으로부터 더 멀어짐을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein each injection point is further from the center of the furnace than any of the electrodes. 제1항에 있어서, 각 불활성가스 분사지점이 로상의 중심으로부터 로상반경의 적어도 50% 벗어남을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein each inert gas injection point is at least 50% of the furnace radius from the center of the furnace. 제1항에 있어서, 이 금속이 강임을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein the metal is steel. 제1항에 있어서, 이 불활성가스가 질소임을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein the inert gas is nitrogen. 제1항에 있어서, 이 불활성가스가 알곤임을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein the inert gas is argon. 제1항에 있어서, 이 불황성가스가 이산화탄소임을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein the inert gas is carbon dioxide. 제1항에 있어서, 세계의 전극이 사용되고 불활성가스가 전극들에 의해성 형성된 둘레의 바깥에 있고, 전극들 사이에 있으며, 로상의 중심으로부터 로상반경의 적어도 50% 벗어나 있는 점들로부터 용융금속내에 분사됨을 특징으로 하는 용해로에서 금속을 용해하는 방법.The molten metal of claim 1 wherein electrodes of the world are used and an inert gas is outside the perimeter formed by the electrodes, between the electrodes, and injected into the molten metal from points that are at least 50% of the furnace radius from the center of the furnace. Dissolving the metal in the furnace, characterized in that. 제1항에 있어서, 불활성가스가 매 가스 분사수단당 1내지 40 SCFM의 범위내의 속도와 25내지 250psig의 범위내의 압력으로 분사됨을 특징으로 하는 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein the inert gas is injected at a velocity in the range of 1 to 40 SCFM and pressure in the range of 25 to 250 psig per gas injection means. 가스분사수단 둘레에 고급 내화물을, 이 수단의 상부 길이부의 적어도 일부에 제공함으로 이루어짐을 특징으로하는 제1항의 용해로에서 금속을 용해하는 방법.A method for dissolving metal in a melting furnace of claim 1, characterized by providing a high quality refractory around the gas injection means to at least a portion of the upper length of the means. 용융금속을 로밖으로 내보내고, 로내에 남아있는 잔류멜트가 응고하는 시간동안에 가스분사 수단을 통해서 흐르는 불활성 가스의 흐름속도와 압력을 증가시킴으로 이루어짐을 특징으로 하는 제1항의 용해로에서 금속을 용해하는 방법.A method of dissolving a metal in a furnace according to claim 1, wherein the molten metal is discharged out of the furnace and the flow rate and pressure of the inert gas flowing through the gas injection means is increased during the solidification of the residual melt remaining in the furnace. 제1항에 있어서, 용융금속 내의 최종 질소함량이, 분사된 가스의 총량의 0에서 100%까지 변하는 질소의 양을 분사함으로써 증가하거나 또는 감소함을 특징으로 용해로에서 금속을 용해하는 방법.The method of claim 1 wherein the final nitrogen content in the molten metal is increased or decreased by injecting an amount of nitrogen that varies from 0 to 100% of the total amount of gas injected. (a) 적어도 하나의 내화물층으로 이루어진 바닥을 가지는 비교적 넓고 얇은 로상;(a) a relatively wide and thin furnace with a bottom consisting of at least one refractory layer; (b) 로안에 있는 적어도 하나의 전극(b) at least one electrode in the furnace (c) 로상의 바닥을 뚫고, 내화물층(들)을 관통하며 로상내부와 통하는 적어도 하나의 가스분사 수단; 및(c) at least one gas injection means penetrating the bottom of the furnace and penetrating the refractory layer (s) and communicating with the interior of the furnace; And (d) 로상 내화물층(들)을 관통하는 가스분사 수단의 상부 길이부의 적어도 일부를 둘러싸는 고급내화물로 이루어짐을 특징으로 하는 용해로.(d) Melting furnace, characterized in that it consists of high quality refractory surrounding at least a portion of the upper length of the gas injection means penetrating the furnace refractory layer (s). 제15항에 있어서, 이 가스분사 수단이 송풍구임을 특징으로 하는 용해로.The melting furnace according to claim 15, wherein the gas injection means is a tuyere. 제16항에 있어서, 이 송풍구가 환상 송풍구임을 특징으로 하는 용해로.17. The melting furnace of claim 16, wherein the tuyeres are annular tuyeres. 제15항에 있어서, 이 가스분사 수단이 다공성 또는 투과성 요소임을 특징으로 하는 용해로.The melting furnace of claim 15, wherein the gas injection means is a porous or permeable element. 제15항에 있어서, 가스분사 수단이 불활성 가스의 원에 연결됨을 특징으로 하는 용해로.The melting furnace of claim 15, wherein the gas injection means is connected to a source of inert gas. 제15항에 있어서, 고급내화물이 고밀도 벽돌로 이루어진 그룹으로부터 선택되거나, MgO, MgO-CaO, MgO-Cr2O3, Al2O3및/또는 SiO2을 기본으로 하여 만들어짐을 특징으로 하는 용해로.The melting furnace of claim 15, wherein the higher refractory material is selected from the group consisting of high density bricks, or is made on the basis of MgO, MgO-CaO, MgO-Cr 2 O 3 , Al 2 O 3 and / or SiO 2 . . 제15항에 있어서, 가스분사 수단을 둘러싸는 고급 내화물이 분리된 조각들의 내화물로 이루어짐을 특징으로 하는 용해로.16. The melting furnace of claim 15, wherein the high refractory surrounding the gas injection means consists of discrete pieces of refractory. 제15항에 있어서, 가스분사 수단을 둘러싸는 고급 내화물은 단일조각의 내화물로 이루어짐을 특징으로 하는 용해로.The melting furnace of claim 15, wherein the high refractory surrounding the gas injection means consists of a single piece of refractory. 제15항에 있어서, 각 분사수단이 전극들 중의 어느 것보다도 로상의 중앙에서 더 멀어짐을 특징으로 하는 용해로.16. The melting furnace of claim 15, wherein each jetting means is further from the center of the furnace than any of the electrodes. 제15항에 있어서, 각 분사수단이 로상의 중앙으로부터 로상반경의 적어도 50% 벗어남을 특징으로 하는 용해로.The melting furnace of claim 15, wherein each injection means is at least 50% of the radius of the furnace from the center of the furnace. 제14항에 있어서, 세 개의 전극이 사용되고, 각 분사수단이 전극들에 의해서 형성된 둘레의 밖에 있고, 전극들 사이에 있으며, 로상의 중심으로부터 로상반경의 적어도 50% 벗어남을 특징으로하는 용해로.15. The melting furnace of claim 14, wherein three electrodes are used, each jetting means being outside the perimeter formed by the electrodes, between the electrodes, and at least 50% of the furnace radius from the center of the furnace. ※ 참고사항: 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the original application.
KR1019870003274A 1986-04-08 1987-04-07 Melting furnace and method for melting metal KR920000524B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US849389 1986-04-08
US06/849,389 US4699654A (en) 1986-04-08 1986-04-08 Melting furnace and method for melting metal

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KR870010202A true KR870010202A (en) 1987-11-30
KR920000524B1 KR920000524B1 (en) 1992-01-14

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AT (1) ATE70856T1 (en)
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CA (1) CA1300898C (en)
DE (1) DE3775443D1 (en)
ES (1) ES2028818T3 (en)

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RU2579707C1 (en) * 2014-12-22 2016-04-10 Владимир Александрович Трусов Reverberatory furnace for aluminium scrap remelting
RU2588700C1 (en) * 2014-12-26 2016-07-10 Владимир Александрович Трусов Shaft-reverberatory furnace for metal remelting
RU2649481C1 (en) * 2017-06-09 2018-04-03 Владимир Александрович Трусов Reverberatory oven for aluminum scrap remelting
RU2656426C1 (en) * 2017-09-21 2018-06-05 Владимир Александрович Трусов Reverberating furnace for metal remelting
RU2657948C1 (en) * 2017-11-02 2018-06-18 Владимир Александрович Трусов Reverberatory oven for aluminum scrap remelting
RU2699876C1 (en) * 2019-01-21 2019-09-11 Владимир Александрович Трусов Tandem reflecting furnace with forehearth for remelting of aluminum scrap
RU2727374C1 (en) * 2019-12-26 2020-07-21 Владимир Александрович Трусов Shaft-reflecting furnace for metal remelting
RU2728271C1 (en) * 2020-01-13 2020-07-28 Владимир Александрович Трусов Reverberatory furnace for aluminum scrap remelting
RU2723848C1 (en) * 2020-01-30 2020-06-17 Владимир Александрович Трусов Rotary melting furnace for processing non-ferrous metal wastes
RU2723854C1 (en) * 2020-02-18 2020-06-17 Владимир Александрович Трусов Rotary inclined furnace
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RU2753927C1 (en) * 2020-08-18 2021-08-24 Владимир Александрович Трусов Reverberatory furnace for remelting aluminium scrap
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US4699654A (en) 1987-10-13
US4796277A (en) 1989-01-03
BR8701581A (en) 1988-01-26
DE3775443D1 (en) 1992-02-06
EP0240998B1 (en) 1991-12-27
EP0240998A1 (en) 1987-10-14
CA1300898C (en) 1992-05-19
KR920000524B1 (en) 1992-01-14
JPS62238985A (en) 1987-10-19
ES2028818T3 (en) 1992-07-16
EP0375657A1 (en) 1990-06-27
ATE70856T1 (en) 1992-01-15

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